Oil
remains the world's leading source of energy, providing 33.1% in 2012, but its
share has fallen to its lowest level since at least 1965 and now could be
displaced as the world's top energy source by coal.
http://www.bp.com/en/global/corporate/about-bp/statistical-review-of-world-energy-2013.html.
As oil loses market
share, coal gains market share and provided 29.9% of the world's global energy in
2012, its highest market share since 1970. The two most carbon intensive
fuels--oil and coal--are the world's biggest sources of energy and together
supply 63% of the globe's energy. One need look no further than those facts to
understand why the world continues to increase the concentration of carbon
dioxide in the atmosphere and why many are pessimistic about the world's
ability to avoid enormous warming in the next 80 years.
Other than coal and
oil, what does the world use for the rest of its energy? Natural gas provides
23.9%; hydro power 6.7%; nuclear power 4.5; and non-hydro renewable energy
2.4%. Those fuels are zero carbon or lower carbon than coal or oil.
But in 2012, the world
used more coal and oil than ever before, and coal moved toward displacing oil
as the world's leading fuel.
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